`sky` panics when no CLI args given

[elimisteve]

args, as defined by

flagsetArgs, additionalArgs := skynet.SplitFlagsetFromArgs(flagset, os.Args[1:])
c, args := skynet.GetClientConfigFromFlags(additionalArgs)
...

is assumed to be non-empty, as the expression args[0] is what triggers the panic, but if no command line arguments are given, it is empty.

$ sky 
doozer: 2013/01/08 01:34:48 trace: skynet.DoozerConnected: Connected to doozer at 127.0.0.1:8046
panic: runtime error: index out of range

goroutine 1 [running]:
main.main()
        /home/steve/gocode/src/github.com/skynetservices/skynet/cmd/sky/sky.go:49 +0x345
...

[elimisteve]

Already merged